WEB Project read properties configuration methods

// Read files from the web project

// 1. Read the file system path * use the absolute path

String filename = getservletcontext (). getrealpath ("/index. jsp"); // read from webroot

String filename2 = getservletcontext (). getrealpath (

"/WEB-INF/a. properties"); // read webroot/WEB-INF/a. Properties

 

// 2. Read files under classpath

String filename3 = readfile. Class. getresource ("/info.txt"). GetFile (); // read info.txt from src.

String filename4 = readfile. Class. getresource (

"/CN/itcast/config/info.txt"). GetFile (); // read

// Cn.itcast.configpackage info.txt

 

// 3. Use resourcebundle to quickly read the properties file under SRC

String value = resourcebundle. getbundle ("myproperties"). getstring (

"Name"); // read the properties file named myproperties under SRC and obtain the name configuration value.

 

// 4. Use the properties class to load the properties File

// Read B. properties under SRC

Inputstream in = readfile. Class. getresourceasstream ("/B. properties ");

Properties Properties = new properties ();

Properties. Load (in );

String value2 = properties. getproperty ("name"); // obtain the name attribute